DRV8818PWPR

Caracteristicas：

FEATURES

• Pulse Width Modulation (PWM) Microstepping

Motor Driver

– Built-In Microstepping Indexer

– Up to 2.5-A Current Per Winding

– Microstepping Indexer Provides up to

1/8-Step Operation

– Low 0.37-Ω (HS + LS) MOSFET

On-Resistance (at 25°) – Programmable Mixed Decay, Blanking, and

Off Time

• Pin-Compatible Upgrade to DRV8811 With Lower Rds(on)

• Thermally Enhanced Surface Mount Package

APPLICATIONS

• Printers

• Textile Machinery

• Positioning/Tracking

• Factory Automation

• Robotics

DESCRIPTION/ORDERING INFORMATION

The DRV8818 provides an integrated stepper motor driver solution for printers, scanners, and other automated equipment applications. The device has two H-bridge drivers, as well as microstepping indexer logic to control a stepper motor.

The output driver block for each consists of N-channel power MOSFETs configured as full H-bridges to drive the motor windings.

A simple step/direction interface allows easy interfacing to controller circuits. Pins allow configuration of the motor in full-step, half-step, quarter-step, or eighth-step modes. Decay mode and PWM off time are programmable.

Internal shutdown functions are provided for over current protection, short circuit protection, under-voltage lockout and overtemperature.

The DRV8818 is packaged in a PowerPAD™ 28-pin HTSSOP package with PowerPAD™ (Eco-friendly: RoHS and no Sb/Br).

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